Measurements of branching fraction and direct CP asymmetry in B±→KS0KS0K± and a search for B±→KS0KS0π±

Measurements of branching fraction and direct CP asymmetry in B±→KS0KS0K± and a search for B±→KS0KS0π±
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B±–KS0KS0K± 中支化分数和直接 CP 不对称性的测量以及对 B±–KS0KS0± 的搜索

DOI:
10.1103/physrevd.99.031102
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发表时间:
2019
期刊:
影响因子:
5
通讯作者:
Aulchenko, V.
Aulchenko, V.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Kaliyar, A. B.;Behera, P.;Mohanty, G. B.;Gaur, V.;Adachi, I.;Ahn, J. K.;Aihara, H.;Al Said, S.;Asner, D. M.;Aulchenko, V.

文献摘要

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我们利用KEKB非对称能量对撞机上的贝儿探测器在介子(4S)共振处收集的含有对的介子样品,研究了带电介子到末态的无粲强子衰变。对于,测得的支化分数和直接对称性分别为和。在没有统计学显著信号的情况下,我们获得其分支分数的90%置信水平上限为。
We study charmless hadronic decays of chargedmesons to the final statesandusing adata sample that containspairs and was collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energycollider. For, the measured branching fraction and directasymmetry areand, respectively. In the absence of a statistically significant signal for, we obtain a 90% confidence-level upper limit on its branching fraction as.